I am currently in my second week of flower and my nute tank has a really bad odor in it and alot of white foam i didnt use my cyco zyme this time also my plant is showing sighns if magnesium deffiency. Im growing in coir and perlite with a 600w hps light two 130cfls for side lighting carbon filter 50l tank 3 air stones 150mm inlet no cerculation pump atm. Dutch master gold zone silcia add and one for flower and bud fuel. Its a cheese plant two weeks into flower. Im afraid of loosing her. Please help